visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2017-11-08 13:00 
연사  
장소 #5318 (E6-2. 5th fl.) 

Emergent exotic quasiparticles in quantum spin liquids

 

Prof. Y. Matsuda

Department of Physics, Kyoto University

 

Nov. 8 (Wed.), 1:00 PM

#5318 (E6-2. 5th fl.)

 

 

Quantum spin liquid (QSL) is an exotic quantum phase of matter whose ground state is quantum-mechanically entangled without any magnetic ordering. A central, yet poorly understood issue concerns the excitations that characterize QSLs, which are hypothetically associated with the quasiparticle fractionalization and topological order. It is widely believed that in dimensions more than one, geometrical frustrations are required to realize QSL states. Here I discuss emergent exotic quasiparticles of three types of QSL states in frustrated quantum magnets mainly by thermal transport measurements. 

 

1) Spinon excitations in organic Mott insulator EtMe3Sb[Pd(dmit)2]2 and 1T-TaS2 with triangular lattice.

2) Magnetic monopole (M-particle), electric monopole (E-particle), and photon (n-particle) excitations in rare earth pyrochlore oxides, Yb2Ti2O7 and  Pr2Zr2O7, both of which host spin-ice correlations with strong quantum fluctuations. 

3) Majorana fermion excitations and the half integer thermal Hall effect in a Kitaev QSL state on honeycomb lattice of a-RuCl3

 

 

Contact: Eun Gook Moon, Physics Dept., (egmoon@kaist.ac.kr)

 

20171108_Prof.Yuji Matsuda.pdf

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
483 2024-03-20 16:00    [High-Energy Theory Seminar] Black hole states at finite N
482 2024-01-03 11:00    Interplay of Strong Correlations, Topology, and Disorder in 2D Quantum Matters
481 2023-09-13 16:00    [High Energy Theory Seminar] Cosmic Birefringence from Dark Photon
480 2022-06-23 11:00    JILA’s search for the electron’s Electric Dipole Moment (eEDM) to probe physics beyond the standard model file
479 2022-01-11 15:00    Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I file
478 2024-01-16 14:00    Dimer Physics and Superconductivity in La3Ni2O7
477 2020-02-20 16:00    Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
476 2023-12-19 16:00    [High Energy Theory Seminar] Non-invertible symmetries, leptons, quarks, and why multiple generations
475 2022-12-13 11:00    Art of thin film engineering toward topological quantum computation file
474 2016-09-29 16:00    2016 Fall, Physics Seminar Serises file
473 2023-01-11 11:00    Directly proving magnetoelastic coupling in a soft ferromagnet using Lorentz 4D-STEM file
472 2021-11-02 16:00    Metrology of Band Topology via Resonant Inelastic X-ray Scattering file
471 2015-07-16 16:00    KAIST Physics Distinguished Lecture
470 2017-11-28 16:00    Physics after the lab and the desk: Your work in PRL file
469 2025-03-11 12:00  Rak-Kyeong Seong (UNIST)  The AI Revolution for Quantum Fields and Strings: A Case Study
468 2022-04-15 11:00    (응집물리 세미나) First-principles studies of polar oxides and their applications file
467 2017-04-27 16:00    반도체 양자점을 이용한 단광자 광원
466 2019-09-18 16:00    Exploring Synthetic Quantum Matter in Superconducting Circuits file
465 2019-07-25 16:00    Band topology of twisted bilayer graphene file
464 2015-10-16 16:00    Fluctuations of entropy production in partially masked electric circuits